Toy block



FIG. 1 is a top, front and right-side perspective view;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a right-side elevational view thereof;

FIG. 5 is a left-side elevational view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The broken line depictions of portions of the toy block form no part of the claimed design. 

The ornamental design for a toy block, as shown and described. 